Ingrown hairs, boils, or cysts? Appeared after shaving, caused by chafing from wearing pads. Feel like pea sized hard lumps beneath skin. More info in comments
Stepped on a toothpick in December, urgent care got as much of it out as they could. This finally popped yesterday while I was checking on the "healed" puncture site. Sweet relief.
Forbidden pop - looks like I came in contact with giant hogweed while clearing the garden (wound dressing to shade from uv and catch fluids when it pops as a learning from the other leg)